Final answer:
The critical elements for raising security in a firm include firewalls, encryption, and Wi-Fi access points, while law enforcement is an external factor and not a direct method for improving a firm's internal security.
Step-by-step explanation:
The critical elements used to raise security in a firm typically include technological and procedural safeguards designed to protect information and systems. Of the options provided, firewall, encryption, and Wi-Fi Access Points are directly related to cybersecurity measures commonly implemented in businesses.
However, law enforcement is typically an external element to a business and is not considered a direct method for raising internal security of a firm's digital or physical assets. Instead, law enforcement agencies play a role in enforcing laws and regulations and providing protection at a community or national level, rather than directly improving a business's security infrastructure.